U.S. tariffs on Chinese exports applied in September have proven more effective than China’s retaliation just before an increase in duties from today. Foxconn has decided to move some production to Taiwan from China to avoid tariff costs. Also: the soybean battle is back in the field as China is set to react to higher tariffs; solar power lights up as tariffs become business-as-usual; Toyota may hope for clearer roads with Argentine tax break; deficit data details vindicate Trump’s trade policy; EU sticks to its agriculture guns, could contribute to trade battle; British trade bounce set...